GREFET International

  Most windows close. Very few actually seal. In brochures and showrooms, that difference is invisible. On site, and particularly after the first monsoon or during peak summer, it’s a painful reality. At GREFET , this difference is at the heart of what we consider aluminium windows to be about. Closing is mechanical. Sealing is engineered. Closing Is an Action. Sealing Is a Result. A self-closing window does nothing but close. When closed, a sealed window provides a controlled barrier against air, water, noise and dust. The difference between the two is not effort or force. It’s design logic. A sealing window depends on: Consistent gasket compression Pressure-balanced profiles Accurate sash alignment Hardware that "pulls", not simply locks Without them working together, a closed window is nothing but one surface touching another. Why Your Windows Don’t Close All The Way The difference between a window that closes and one that seals turns out to be frequen...

  Spend a day walking through any residential or commercial project, and this is apparent immediately. Two aluminium windows. Same colour. Same glass. Same sightline. Another stays quiet, dry and smooth year after year. The other let air out, rattles or gets tired much too soon. What this actually says is quite straightforward: windows are evaluated by what you see, but they work thanks to what you don’t. This is the part where most decision make trails at  GREFET . Appearance Is Easy. Performance Is Engineered. In the Indian market, windows are frequently chosen by sight. Profile thickness, finish or brand name makes the final decision. But performance isn’t skin deep. Two windows of the same appearance can vary in: Internal chamber design Drainage and water evacuation paths Sealing logic and gasket continuity Hardware load distribution Frame and sash alignment tolerances None of which, of course, appears in a photograph or on a showroom floor. Everything is up to th...

  The one question every builder needs to ask before they order windows is not the brand- or price -or even profile thickness. It’s easier, and so much more painful: Will this window work after five Indian summers, five monsoons like it works on the day of handover? Many window choices are set early, perhaps hastily. Drawings are signed, budgets are sealed, and samples appear good. But the true test of performance doesn’t happen at showrooms. It is tested, on site, over time, under stress. The One Question Every Builder Needs to Ask Before Locking in their Windows: What’s the System Logic? A window is a not product, it is one thing. It is a combination of profiles, drainage paths, gaskets, hardware and glass thicknesses as well as fabrication criteria. Where these components are not designed to operate as a system, performance is reliant on setting and sealant. That works temporarily. It never works long-term. System logic dictates how you dump water out of the frame, a...

  Indian weather is not polite. It does not adapt to buildings. Buildings adapt to it. From scorching summers and heavy monsoons to coastal humidity and winter dust, Indian conditions test every material over time. So when the question comes up - Indian Weather vs Aluminium Windows: Who Really Wins? - the answer is not as simple as choosing aluminium. It depends on how that aluminium window is designed, engineered, and installed. Indian Weather vs Aluminium Windows: Understanding the Real Challenge India does not have one climate. It has many, often within the same state. • Extreme heat in central and northern regions • High rainfall and wind pressure during monsoons • Coastal corrosion and salt-laden air • Dust, pollution, and temperature fluctuations Any window system that performs well here needs to manage expansion, water ingress, air leakage, and long-term wear. Aluminium as a material has advantages, but only when used correctly. Indian Weather vs Aluminium Win...

  When people search for the best aluminium windows in Northeast India , they’re usually dealing with a very specific set of challenges. Heavy rainfall. High humidity. Temperature variations. Remote project locations. What works in other parts of the country doesn’t always hold up here. The Northeast demands systems that are engineered thoughtfully, fabricated precisely, and installed with real-world conditions in mind. At GREFET, this is exactly where system aluminium windows make the difference. Best Aluminium Windows in Northeast India : Why the Region Needs System-Based Solutions Northeast India’s climate can be unforgiving. Constant moisture exposure, wind-driven rain, and long monsoons put stress on conventional window setups. Traditional aluminium sections, when paired with generic hardware and onsite improvisation, often fail early. The best aluminium windows in Northeast India are system-based. That means profiles, hardware, gaskets, drainage, and glass thickness a...

Site coordination is where good projects slow down and average projects derail. Delays, miscommunication, last-minute fixes, and blame games usually don’t come from poor intent. They come from fragmented systems. This is exactly where system aluminium windows quietly change the way a site runs. At GREFET , we’ve seen one pattern repeat across projects of every scale. The more moving parts a window has on site, the harder it becomes to coordinate. System aluminium windows reduce those moving parts by design. The Real Problem with Conventional Window Coordination Traditional aluminium windows are often assembled through multiple disconnected decisions. Profiles from one source. Hardware from another. Glass finalised late. Installation methods figured out on site. What this really means is: Architects issue drawings that can’t be executed as planned Contractors chase multiple vendors for clarifications Fabricators adjust designs mid-way to “make it work” Installati...

  Top Aluminium Window Brand in Northeast India is a question that keeps coming up among architects, homeowners, and fabricators who want reliability in a region known for heavy rains, humidity, and shifting temperatures. The Northeast needs windows that stay stable, don’t warp, and hold their performance for years. That’s where system-based aluminium windows are making all the difference. Let’s break it down. The Northeast isn’t the easiest place for building materials. High moisture demands strong surface finishes. Wind loads in hill regions demand engineered strength. And temperature swings require hardware and gaskets that actually work together, not as isolated parts. This is why the conversation is shifting from local, untested sections to system-driven brands. Below is a closer look at what makes GREFET stand out and why more professionals today are choosing system aluminium windows. Top Aluminium Window Brand in Northeast India – What Matters Most When you’re choo...

  The hidden math behind smooth sliding windows isn’t something most homeowners think about, but it’s the foundation of how a window feels, performs, and lasts. When a slider glides effortlessly with one finger, it isn’t luck. It’s physics, geometry, tolerance control, weight balance, and system design working quietly in the background. At GREFET , we engineer sliding systems by treating comfort as an outcome of precise calculation rather than trial and error. Let’s break down the math that makes a smooth slider feel almost weightless. The Hidden Math Behind Smooth Sliding Windows – Weight Distribution Every sliding panel has a weight made up of aluminium, glazing, hardware , and gaskets. Smooth motion starts with understanding how that weight sits on the rollers. The calculations involve: Panel width × height × glass thickness Glass weight per square meter Section moment of inertia Load-bearing capacity of rollers What this really means is the weight needs to be trans...

  Top 10 aluminium window brands in South India is a topic that comes up often among homeowners, architects, and builders because the southern states deal with a mix of climates that test the performance of any window system. High coastal humidity, heavy monsoons, saline air in cities like Chennai and Kochi, and strong summer heat across Karnataka, Telangana, and Andhra Pradesh mean the windows you choose can’t be generic. They need to be engineered, tested, and consistent. What this really means is that not all aluminium windows are created equal, and choosing the right system brand makes all the difference in long-term performance, comfort, and maintenance. Below is a carefully put-together list of the top 10 aluminium window brands trusted across South India, based on engineering quality, climatic performance, installer network, and system reliability. 1. GREFET Aluminium Systems Let’s start with what sets GREFET apart. As a system brand, we follow a European design phi...

  What smart consumers notice in a showroom sample is more than a checklist. It’s a way of understanding how windows and doors will behave long after installation. A showroom sample gives away a surprising amount about engineering quality, long-term stability, and the philosophy of the brand behind it. At GREFET , we spend a lot of time watching how thoughtful homeowners, architects, and fabricators evaluate samples, and the patterns are always the same. Let’s break down what sharp buyers look for and why it matters. What Smart Consumers Notice in a Showroom Sample – Frame Structure and Wall Thickness The first impression comes from the feel. You can tell a lot about a system by simply holding the section. Smart consumers focus on: Balance of weight across the profile Even distribution of aluminium in critical load areas Any flexing or distortion when lightly pressed How the inner chambers are designed A good system doesn’t need to be heavy. It needs to be intellig...